Pipe insulation



Aug. 8, 93 G. R. BA'UMEISTER 1,921,648

PIPE INSULATION Filed Jan. 4, 1933 FIG. I 2

Patented Au 3 1933 e 1,921,648 mm ns:'smntrrolv George R.Baumeister,Bostom Mass. ply Application January 4; 19353; Serial a r 6 Claims.(01." 154-49 l This invention relates to pipe insulators andparticularly to pipe insulators which may be.

manufactured as a complete device at a central point and which may bereadily and quickly apa pipe or flange insulator which isso constructedthat all metal parts are insulated and protected from all contact withth'e surrounding air.

Other'objects and advantages of the invention will appearin thefollowing specification.

Generally the invention consists of providing two semi-cylindricalchannel members which are hinged at either end and which may be held to-'gether by some means at the hinged ends. The insulating material isadapted to be attached to the external portion of the channel membersand v to be removable therewith as a unit.

Figure 1 shows a view of the pipe insulator in position on a flange witha section taken through a portion thereof.

Figure 2 is a section. along a line 2-2 of Figure 1, the flange notbeing sectioned. Figure 3 shows the hinge arrangementat end of thedevice. f i

Referring now to the drawing in which like reference charactersindicate. like parts in the several views, A shows the pipe to beinsulated one and a flange B attached thereto. I The insulator Aconsists of the two semi-cylindrical sections 1,--1.

In cross section as shown in Figure l, the insulator consists of acentral channelshaped portion 2 and two inverted channels 3 and 4 oneither side of the central channel-shaped portion;- Attached to theabove-mentioned channel-shaped 5'; portions is'the insulating material5. The insulating material is held in position on the metal members bymeans of wires 6 in the preferred embodiment. I I In the constructionshown in Figure 2 the hinge portions 7 of the two semi-cylindricalchannel members are set in from the outer ends 8 and 9 of the channelmembers. The hinges are so indented in order to prohibit anyone fromopening; the protector from one end only,.and so running 3 I theinsulation at the diametrically opposite end As an alternativetheinsulation has been attached to the channels of the 1 insulator This{virtually makes vice hinge-bound at-both joints. i

The hinge pins 10;as shown in Figurei whi'ch insi in my preferredembodiment are made ofsome 3 material such as brass, are insertedintofthe bosses l1 and-12 on one ofthe' members and the complementaryboss 13 on the opposite member; As

will be .readily understood fromthe-dra'wing, the

top-channel-shaped member will-have the two bosses on one end and'a'single'bo'ss onthe opposite' end and the lower channel-shaped memberwill be similarly constructedlso that both members will be identical inshape and form;

In proceeding according tomy invention, the

insulating material 5 is first moulded'to-the two semi-cylindricalchannel-shaped members; which are disassembled for this purpose. Thematerial isatta'ched to the members by means of the wires 6 whichstretch from one upturned portion 1410f Ioneof the inverted channelsover the insulating material to apoin't longitudinally opposite on theupturned portion'15fof the other inverted channel; The'two opposingmembers are then brought into juxtaposition and the brass pins insertedin the bosses thereof. A skimming or thin outer covering of insulatingmaterial or cement is' applied to the device. It-will be seen that when.the two halves are thus assembled; the opposing ends of the channelmembers are directly in contact so that a metal to metal contact isobtained. The-pins are then withdrawn and the two halves separatedandtaken to the place in which they jt are to be used: c v

mode of construction after without bringing the two sections intoassembled relation the skimming may be applied and the outer ends of thechannel section will serve-as gauging mediums for the application of theskimming.

It will be readily seen from an inspection of Figure 1 of the drawingthat the sections bear directly on the pipe beneath the upturned flangeand since the insulating material is attached to 1' the exterior of thechannel members all moisture from the flange or other fitting, as thecase may be, .is prevented from contacting the insulating material. Thusshould the fitting developa leak, .it will not be absorbed by theinsulating material but will drop into thecenter' channel memberand'from there will seep out through the hinged connection. lnassemblingthe insulator on the; I pipe it is solocated that the joint betweenthetwosectionswill be on a vertical center line so that any seepagewill-almost immediately be disclosed. Since the channel members areformed from an integral piece of material it is apparent that the jointbetween the two sections will be the only means by which the liquid orcondensate may escape from the central cylinder formed by thechannel-shaped portion.

It is also pointed out that no metal is exposed to the air and in thismanner the efficiency of the insulator is greatly increased.

Various changes in the construction and arrangement of the several partsherein shown and described may be employed without departing from thespirit of ,my' invention'as disclosed in the appended claims' I claim: V

1. Pipe insulation comprising a plurality of sections, each of which iscomposed of an integral solid water-tight piece of metal, adapted toencircle a pipe fitting, said sections being so formed.

that insulating material may be attached to the exterior thereof in sucha manner that substantially no metal is exposed. I

2. Pipe insulation comprising two semi-cylindrical sections, each ofwhich is composed of a edge of one of the inverted channels to the otherto attach the insulating material to the said sections, bosses on eachend or" the said sections, and means insertable through said bosses toretain the sections in assembled relation.

4. Pipe insulation comprising two semi-cylindrical sections, each ofwhich comprises a central nel-shaped portions on either side of thecentral portion, each section being composed of an inte-, gral, solid,water-tight metal, said sections being adapted to be assembled about apipe, means to hold said sections in assembled relation, insulatingmaterial attached to the exterior of said sections so that substantiallyno metal is exposed, and means to retain said insulating material inposition. I

5. Pipe insulation comprising two semi-cylindrical sections, each ofwhich is composed of a central channel-shaped portion and two invertedchannel-shaped portions on either side of the central portion, saidsections being made of a solid, integral part, insulating materialattached to the exterior of said sections and being held in positionthereon bymeans of wires stretched from the upturned end of one of theinverted channel-- shaped portions to the upturned end of the. otherinverted channel-shaped portion, veach abovementioned section havingdiametrically opposed outstretched lips, said lips having bosses thereinadapted to cooperate with bosses in the others'ection, a pin insertedthrough the, cooperating bosses to hold the sections in position about aflange or pipe, anda thin outer covering of cement applied over theentire assembled device.

6. A device for completely enclosing a flange or other pipe fittingcomprising two semi-cylindrical sections, each of which is composed of acentral channel-shaped portion and two inverted channel-shaped portions,said central channel-shaped portion being of a larger diameter and widththan the fitting to be enclosed so as to furnish an air space betweenthe fitting and the central portion, each section being made from asolid, integral metal, insulating material attached to the exterior ofthe sections, so as to completely cover all the metal parts of thedevice, means to retain said insulating material in position, and meansto hold the two sections about the fitting.

GEORGE R. BAUMEISTER.

channel-shaped portion and two inverted chan-

